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  <script>
    var minimumCardPickup = function (cards) {
      const map = new Map()
      let ans = Infinity
      for (let i = 0; i < cards.length; i++) {
        const c = cards[i]
        if (map.has(c)) {
          ans = Math.min(ans, i - map.get(c) + 1)
        }
        map.set(c, i)
      }
      return ans === Infinity ? -1 : ans
    };
  </script>
</body>

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